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Sexually Transmitted Infections

Which of the following does not increase the risk of transmission of syphilis?

a. Cervical inversion

b. Cervical hyperemia

c. Cervical friability

d. Abrasions of the vaginal mucosa

The incubation period of syphilis is which of the following?

a. 1–7 days

b. 10 days

c. 3–90 days

d. 120–180 days

A 21-year-old G4P2 at 17 weeks’ gestation presents for her first prenatal care visit. She has a history of prostitution, but she denies engaging in such activities for the past month. During examination, a painless lesion is noted on the right labia. A picture of the lesion is provided below. The most likely diagnosis is which of the following?

Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Sexually transmitted infections. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 65-1.

a. Chancroid

b. Primary syphilis

c. Bartholin gland duct abscess

d. Herpes simplex virus infection

A 21-year-old G4P2 at 17 weeks’ gestation presents for her first prenatal care visit. She has a history of prostitution, but she denies engaging in such activities for the past month. During examination, a painless lesion is noted on the right labia. A picture of the lesion is provided below. The best test to perform for the patient to ascertain a definitive diagnosis is which of the following?

Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Sexually transmitted infections. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 65-1.

a. Rapid plasma reagin (RPR)

b. Bacterial culture of lesion exudate

c. Dark-field examination of lesion exudate

d. Serum assay for herpes simplex virus 1 and 2 antibodies

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